Isotope dilution analysis is a valid approach for studying nitrogen transformation characteristics in soil-plant systems.
同位素稀释分析是研究氮素在土壤植物体系中转化和迁移特征的有效方法。
Improvement Combustion System is a valid approach in order to enhance the capability of vehicle-use Diesel Engine.
改进燃烧系统是提高车用柴油机性能的有效途径。
However, implementing safety evaluation in the transportation enterprise of dangerous goods on road is a valid approach that can guarantee transportation security.
而在道路危险货物运输企业中推行安全评价是一个确保安全运输的有效途径。
It is a very valid approach to use the flood with high sand controlling sand and silting land for reducing the Yellow River bed silted and controlling desert and developing farmland.
利用高含沙洪水淤地、治沙，是减少黄河河床淤积、治理沙漠、开发农田十分有效的途径。
Averaging test data can be a valid approach, but its use depends upon the sample and its purpose.
将检验数据平均是一个有效的方法，对其使用应依据样品和其目的。
Averaging test data can be a valid approach, but its use depends upon the sample and its purpose.
将检验数据平均是一个有效的方法，对其使用应依据样品和其目的。
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